13120142400221 has 16 divisors (see below), whose sum is σ = 13425103041600. Its totient is φ = 12817943221248.

The previous prime is 13120142400199. The next prime is 13120142400347. The reversal of 13120142400221 is 12200424102131.

It is a cyclic number.

It is not a de Polignac number, because 13120142400221 - 2²⁶ = 13120075291357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120142405221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326929085 + ... + 326969213.

It is an arithmetic number, because the mean of its divisors is an integer number (839068940100).

Almost surely, 2^{13120142400221} is an apocalyptic number.

It is an amenable number.

13120142400221 is a deficient number, since it is larger than the sum of its proper divisors (304960641379).

13120142400221 is a wasteful number, since it uses less digits than its factorization.

13120142400221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74348.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 13120142400221 its reverse (12200424102131), we get a palindrome (25320566502352).

The spelling of 13120142400221 in words is "thirteen trillion, one hundred twenty billion, one hundred forty-two million, four hundred thousand, two hundred twenty-one".